diff --git a/app/models/ci/pipeline.rb b/app/models/ci/pipeline.rb
index eebbf7c4218..28f154581a9 100644
--- a/app/models/ci/pipeline.rb
+++ b/app/models/ci/pipeline.rb
@@ -228,6 +228,10 @@ module Ci
       statuses.select(:stage).distinct.count
     end
 
+    def total_size
+      statuses.count(:id)
+    end
+
     def stages_names
       statuses.order(:stage_idx).distinct
         .pluck(:stage, :stage_idx).map(&:first)
diff --git a/app/views/notify/pipeline_success_email.html.haml b/app/views/notify/pipeline_success_email.html.haml
index 574a8f2fa50..bae37292d62 100644
--- a/app/views/notify/pipeline_success_email.html.haml
+++ b/app/views/notify/pipeline_success_email.html.haml
@@ -109,7 +109,7 @@
               API
 %tr
   %td{ colspan: 2, style: "font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;color:#333333;font-size:15px;font-weight:300;line-height:1.4;padding:15px 5px;text-align:center;" }
-    - job_count = @pipeline.statuses.latest.size
+    - job_count = @pipeline.total_size
     - stage_count = @pipeline.stages_count
     successfully completed
     #{job_count} #{'job'.pluralize(job_count)}
diff --git a/app/views/notify/pipeline_success_email.text.erb b/app/views/notify/pipeline_success_email.text.erb
index ddced2279e1..39622cf7f02 100644
--- a/app/views/notify/pipeline_success_email.text.erb
+++ b/app/views/notify/pipeline_success_email.text.erb
@@ -22,11 +22,11 @@ Committed by: <%= commit.committer_name %>
 <% end -%>
 <% end -%>
 
-<% build_count = @pipeline.statuses.latest.size -%>
+<% job_count = @pipeline.total_size -%>
 <% stage_count = @pipeline.stages_count -%>
 <% if @pipeline.user -%>
 Pipeline #<%= @pipeline.id %> ( <%= pipeline_url(@pipeline) %> ) triggered by <%= @pipeline.user.name %> ( <%= user_url(@pipeline.user) %> )
 <% else -%>
 Pipeline #<%= @pipeline.id %> ( <%= pipeline_url(@pipeline) %> ) triggered by API
 <% end -%>
-successfully completed <%= build_count %> <%= 'build'.pluralize(build_count) %> in <%= stage_count %> <%= 'stage'.pluralize(stage_count) %>.
+successfully completed <%= job_count %> <%= 'job'.pluralize(job_count) %> in <%= stage_count %> <%= 'stage'.pluralize(stage_count) %>.
diff --git a/app/views/projects/pipelines/_info.html.haml b/app/views/projects/pipelines/_info.html.haml
index f5149306734..01ea9356af5 100644
--- a/app/views/projects/pipelines/_info.html.haml
+++ b/app/views/projects/pipelines/_info.html.haml
@@ -13,7 +13,7 @@
     .well-segment.pipeline-info
       .icon-container
         = icon('clock-o')
-      = pluralize @pipeline.statuses.count(:id), "job"
+      = pluralize @pipeline.total_size, "job"
       - if @pipeline.ref
         from
         = link_to @pipeline.ref, project_ref_path(@project, @pipeline.ref), class: "ref-name"
diff --git a/app/views/projects/pipelines/_with_tabs.html.haml b/app/views/projects/pipelines/_with_tabs.html.haml
index ad61f033a1c..398a1c46746 100644
--- a/app/views/projects/pipelines/_with_tabs.html.haml
+++ b/app/views/projects/pipelines/_with_tabs.html.haml
@@ -8,7 +8,7 @@
     %li.js-builds-tab-link
       = link_to builds_project_pipeline_path(@project, @pipeline), data: {target: 'div#js-tab-builds', action: 'builds', toggle: 'tab' }, class: 'builds-tab' do
         Jobs
-        %span.badge.js-builds-counter= pipeline.statuses.count
+        %span.badge.js-builds-counter= pipeline.total_size
     - if failed_builds.present?
       %li.js-failures-tab-link
         = link_to failures_project_pipeline_path(@project, @pipeline), data: {target: 'div#js-tab-failures', action: 'failures', toggle: 'tab' }, class: 'failures-tab' do
diff --git a/changelogs/unreleased/fix_build_count_in_pipeline_success_maild.yml b/changelogs/unreleased/fix_build_count_in_pipeline_success_maild.yml
new file mode 100644
index 00000000000..c39bba62271
--- /dev/null
+++ b/changelogs/unreleased/fix_build_count_in_pipeline_success_maild.yml
@@ -0,0 +1,5 @@
+---
+title: fix build count in pipeline success mail
+merge_request: 15827
+author: Christiaan Van den Poel
+type: fixed
diff --git a/spec/features/projects/pipelines/pipeline_spec.rb b/spec/features/projects/pipelines/pipeline_spec.rb
index 888e290292b..3987cea0b4f 100644
--- a/spec/features/projects/pipelines/pipeline_spec.rb
+++ b/spec/features/projects/pipelines/pipeline_spec.rb
@@ -152,7 +152,7 @@ describe 'Pipeline', :js do
       end
 
       it 'shows counter in Jobs tab' do
-        expect(page.find('.js-builds-counter').text).to eq(pipeline.statuses.count.to_s)
+        expect(page.find('.js-builds-counter').text).to eq(pipeline.total_size.to_s)
       end
 
       it 'shows Pipeline tab as active' do
@@ -248,7 +248,7 @@ describe 'Pipeline', :js do
       end
 
       it 'shows counter in Jobs tab' do
-        expect(page.find('.js-builds-counter').text).to eq(pipeline.statuses.count.to_s)
+        expect(page.find('.js-builds-counter').text).to eq(pipeline.total_size.to_s)
       end
 
       it 'shows Jobs tab as active' do
diff --git a/spec/models/ci/pipeline_spec.rb b/spec/models/ci/pipeline_spec.rb
index 856e17b20bd..a1f63a2534b 100644
--- a/spec/models/ci/pipeline_spec.rb
+++ b/spec/models/ci/pipeline_spec.rb
@@ -1530,4 +1530,16 @@ describe Ci::Pipeline, :mailer do
       expect(query_count).to eq(1)
     end
   end
+
+  describe '#total_size' do
+    let!(:build_job1) { create(:ci_build, pipeline: pipeline, stage_idx: 0) }
+    let!(:build_job2) { create(:ci_build, pipeline: pipeline, stage_idx: 0) }
+    let!(:test_job_failed_and_retried) { create(:ci_build, :failed, :retried, pipeline: pipeline, stage_idx: 1) }
+    let!(:second_test_job) { create(:ci_build, pipeline: pipeline, stage_idx: 1) }
+    let!(:deploy_job) { create(:ci_build, pipeline: pipeline, stage_idx: 2) }
+
+    it 'returns all jobs (including failed and retried)' do
+      expect(pipeline.total_size).to eq(5)
+    end
+  end
 end